Mercurial > cpython-lru_cache-weakref

annotate Include/intobject.h @ 25838:8540887bcec6 2.2

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Backport of 2.183: Fix memory leak in add_subclass() found by NealN with valgrind.
author Guido van Rossum <guido@python.org>
date Fri, 18 Oct 2002 13:42:21 +0000
parents 5158e4789459
children aa8d59823add
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2 /* Integer object interface */
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4 /*
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5 PyIntObject represents a (long) integer. This is an immutable object;
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6 an integer cannot change its value after creation.
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7
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8 There are functions to create new integer objects, to test an object
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9 for integer-ness, and to get the integer value. The latter functions
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10 returns -1 and sets errno to EBADF if the object is not an PyIntObject.
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11 None of the functions should be applied to nil objects.
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13 The type PyIntObject is (unfortunately) exposed here so we can declare
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14 _Py_TrueStruct and _Py_ZeroStruct below; don't use this.
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15 */
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17 #ifndef Py_INTOBJECT_H
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18 #define Py_INTOBJECT_H
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19 #ifdef __cplusplus
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20 extern "C" {
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21 #endif
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23 typedef struct {
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24 PyObject_HEAD
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25 long ob_ival;
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26 } PyIntObject;
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28 extern DL_IMPORT(PyTypeObject) PyInt_Type;
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30 #define PyInt_Check(op) PyObject_TypeCheck(op, &PyInt_Type)
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31 #define PyInt_CheckExact(op) ((op)->ob_type == &PyInt_Type)
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33 extern DL_IMPORT(PyObject *) PyInt_FromString(char*, char**, int);
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34 #ifdef Py_USING_UNICODE
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35 extern DL_IMPORT(PyObject *) PyInt_FromUnicode(Py_UNICODE*, int, int);
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36 #endif
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37 extern DL_IMPORT(PyObject *) PyInt_FromLong(long);
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38 extern DL_IMPORT(long) PyInt_AsLong(PyObject *);
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39 extern DL_IMPORT(long) PyInt_GetMax(void);
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42 /*
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43 False and True are special intobjects used by Boolean expressions.
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44 All values of type Boolean must point to either of these; but in
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45 contexts where integers are required they are integers (valued 0 and 1).
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46 Hope these macros don't conflict with other people's.
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48 Don't forget to apply Py_INCREF() when returning True or False!!!
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49 */
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51 extern DL_IMPORT(PyIntObject) _Py_ZeroStruct, _Py_TrueStruct; /* Don't use these directly */
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53 #define Py_False ((PyObject *) &_Py_ZeroStruct)
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54 #define Py_True ((PyObject *) &_Py_TrueStruct)
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56 /* Macro, trading safety for speed */
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57 #define PyInt_AS_LONG(op) (((PyIntObject *)(op))->ob_ival)
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59 /* These aren't really part of the Int object, but they're handy; the protos
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60 * are necessary for systems that need the magic of DL_IMPORT and that want
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61 * to have stropmodule as a dynamically loaded module instead of building it
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62 * into the main Python shared library/DLL. Guido thinks I'm weird for
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63 * building it this way. :-) [cjh]
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64 */
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65 extern DL_IMPORT(unsigned long) PyOS_strtoul(char *, char **, int);
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66 extern DL_IMPORT(long) PyOS_strtol(char *, char **, int);
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68 #ifdef __cplusplus
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69 }
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70 #endif
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71 #endif /* !Py_INTOBJECT_H */